Wind discrepancy

[jgoggi 65]

RC V4.01: the actual wind is 220 degrees/5 kts, but the tower controller says "clear for takeoff, wind calm". Why?? I tried it more times, no change.

[slashed2 53]

I have had this occur also, though it may be due to the low wind speed? Anything below a certain knot, mabye 9 is considered calm?Ian.

[slashed2 53]

Okay, looked online and <1 knot is considered calm but it may be the metar is somewhat old and the windspeed has gone down via dynamic weather. Ian.

[Ray Proudfoot 8,945]

Hi,I believe this is a world-wide standard. Anything less than 5kts is deemed to be calm.Cheers,

[jgoggi 65]

Hi Ian,I also thought that, but I listened to ATIS and it was still giving 5 knots. Also on the EHSI the wind vector showed 5 knots.

[slashed2 53]

Sounds reasonable. I would assume that's the variable set within RC4.Thanks.Ian.